Gill rakers rod-shaped with plate-like base or flat tooth plates, all bearing numerous tiny teeth; three rows on first to
third arches and two rows on fourth: counts in Table 3. A very large tooth patch on each side of third pharyngobranchial,
absent from the rest pharyngobranchials. A very large tooth patch on each side of fifth ceratobranchial. Basibranchials
edentulous